EP4035232A1

EP4035232A1 - Electrical plug connector

Info

Publication number: EP4035232A1
Application number: EP20780564.9A
Authority: EP
Inventors: Oliver Dobler
Original assignee: Neutrik AG
Current assignee: Neutrik AG
Priority date: 2019-09-24
Filing date: 2020-09-22
Publication date: 2022-08-03
Also published as: CA3153602A1; JP2023501873A; CN114521311A; AU2020355416A1; MX2022003225A; US20220311175A1; MX2022003227A; KR20220044851A; AT523016A2; JP2022548992A; WO2021058129A1; AT522949B1; CN213401658U; CA3154128A1; KR20220057579A; BR112022004855A2; BR112022004924A2; EP4035233A1; CN114450858B; JP7462741B2

Abstract

The invention relates to an electrical plug connector, in particular a built-in plug connector, comprising: a housing (1) with a connecting flange (3) which has recesses (4) for feeding through fastening means (5); a flange plate (10) with mounting holes (12) for connection to a device wall (G), a switch panel or the like; and a seal (17) inserted therebetween. The outer edge (14) of the flange plate (10) is bent towards the housing (1) and covers the outer edge of the connecting flange (3). The seal (17) protrudes with a peripheral sealing lip (18) into the insertion opening (2) and has an edge (19) which is bent towards the housing (1), fits over the outer peripheral edge of the connecting flange (3) and is itself covered by the outer edge (14) of the flange plate (10). In the assembled state, the peripheral edge (14) of the flange plate (10) protrudes up to no more than the height of the rear side of the connecting flange (3), and the edge (19) of the seal (17) protrudes beyond the rear face of the connecting flange (3).

Description

ELECTRIC CONNECTOR

The invention relates to an electrical connector, in particular a built-in connector, according to the preamble of claim 1, and a seal for such a connector, according to the preamble of claim 10.

Built-in connectors or chassis sockets are th in the housings of electrical devices, built into control panels or similar arrangements in order to connect these devices to electrical lines. These lines carry at least one end of a cable connector in a complementary design to the built-in connector and can be electrically connected to this and also mechanically locked against unintentional loosening of the connection.

The built-in connector typically comprises a housing with an insertion opening for the complementary connector, with a cantilevered connecting flange protruding from the plug-in end of the housing, which has recesses for the implementation of fastening means. Furthermore, a plug-in flange plate with a plug-in opening for the complementary connector and with mounting holes for connection to a device wall, a control panel or the like is provided.

In CN 204516967 U, a built-in connector is disclosed in which a substantially flat sealing plate is inserted between the flange plate and the connecting flange on the housing and seals the connection between these two components. If a sealing device of the entire built-in connector against a device wall in which it is set, a control panel or the like. Desired, an additional seal must be provided between the built-in connector and the device wall. This makes installation more complex and slower and requires an additional component.

A seal for sealing at least the flange plate of a built-in connector is known and is used, for example, in the SE8FD-TOP installation kit. This up device is designed as a substantially flat sealing plate and has a central cutout at the point of the insertion opening of the built-in connector. By positioning between the device wall, control panel or the like. And flange plate with insertion opening for the complementary connector, the penetration of dust, moisture, etc. into the interior of the device or the control panel is prevented.

Finally, at least one fastening means, typically a screw, is used to fix the housing, flange plate and seal to the device wall, control panel or the like.

The object of the present invention was to overcome the disadvantages of the prior art and to create a built-in connector which is sealed as comprehensively as possible and which the end user can assemble quickly and easily with conventional tools without additional components.

This object is achieved by a device and a method according to the claims.

The device according to the invention is characterized in that the outer edge of the flange plate is bent up in the direction of the housing and covers the outer edge of the connec tion flange, the seal having a circumferential sealing lip that protrudes radially into the insertion opening and the seal one in the direction of the housing has bent-up edge which engages over the outer peripheral edge of the connecting flange and which is itself covered by the outer edge of the flange plate, with the circumferential edge of the flange plate in the assembled position extending up to a maximum of the back of the flange plate of the housing and protruding in the direction of the housing protruding edge of the seal over the entire circumference of the connecting flange protrudes beyond the rear surface. By pressing the built-in connector against the housing wall, the control panel or the like until the edge of the flange plate rests against this wall, the edge of the seal protruding beyond the connecting flange is firmly pressed against the wall and this volume is between the connecting flange and the edge of the flange plate squeezed filling. The seal is protected against damage before, during and after installation between the connecting flange and the flange plate. The plug-in opening is sealed when the complementary plug is inserted by the circumferential sealing lip, while the sealing device against the housing of the device or the control panel is guaranteed by the upturned edge of the seal protected by the flange plate. The components flange plate, seal and housing with connecting flange can be plugged together at the factory and can be used by the end user as a jointly manageable component.

Preferably, the inside of the outer edge of the flange plate, which is bent up in the direction of the housing, is chamfered outward, and the outer side of the circumferential edge of the seal is likewise chamfered outward, preferably in a complementary manner. When plugging together or when attaching to the device wall or the control panel by means of the fastening means provided, the edge of the seal is squeezed somewhat and pressed onto the device wall or the surface of the control panel, which can achieve a particularly good sealing effect.

An alternative embodiment of a connector according to the invention provides that, in the assembled state, the circumferential edge of the flange plate ends in front of the height of the rear side of the flange plate of the housing and a circumferential, outwardly protruding sealing edge at least part of the thickness of the bent up in the direction of the housing The edge of the flange plate. This avoids the shearing action of a beveled inner side of the flange plate and the sealing effect is brought about by a force acting perpendicularly on the edge of the seal.

According to a particularly advantageous embodiment of the invention, it is provided that sealing grommets are formed on the seal at the locations of the mounting bores and protrude in the direction of the flange plate. In the assembled state, the sealing grommets extend within the mounting holes of the flange plate, which preferably have book sen-like extensions in the direction of the connecting flange of the housing. The outside diameter thereof preferably corresponds to the inside diameter of the mounting holes or the socket-shaped extensions, the sealing grommets ending above the lower edge of the receiving area for the head of the fastening means in the mounting hole. On the one hand, a further improvement in the sealing effect can be achieved by preventing moisture, dirt or dust from penetrating through the mounting holes, while the fasteners, in particular the screw heads, have a hard stop on the flange plate that can be felt well. A further optimization of the sealing effect is given when the inner diameter of the sealing grommets corresponds minimally to the outer diameter of the fastening means and thus all surfaces lie against one another in a sealing manner.

According to a preferred embodiment of the invention, the connector is additionally characterized in that the flange plate has retaining pegs protruding in the direction of the housing, and the connecting flange has corresponding retaining bores into which the ends of the retaining pegs can be inserted. Preferably, the Halteboh ments are limited by rings rising above the connecting flange and the seal covers these rings with centrally open domes resting thereon. So that the flange plate and the housing with the seal inserted in between are sufficiently well connected to the miteinan to prevent falling apart and to be able to handle the connector as a common component. In addition, the retaining pin in the case of Hal tebohrungen that completely penetrate the connecting flange, to stop at the front of the device housing, the control panel or the like. Be provided and thus exert a spacer effect to limit the effect on the seal and thus to prevent their damage.

In order to ensure the sealing effect also for the holding bores, the central opening of the dome preferably has a slightly smaller diameter than the through opening and / or the outer diameter of the holding pin. This ensures a tight implementation of the retaining pin, as well as good cohesion due to the friction between the seal and the retaining pin.

The connector is preferably designed such that the flange plate has a circumferential groove surrounding the insertion opening, in which groove a strip surrounding the sealing lip for the insertion opening radially outside and rising above the surface of the seal is received. In addition to optimally centering the seal and flange plate with respect to one another, this strip also acts as an additional sealing strip and thus increases the sealing effect.

In many cases of plug connections, it is desirable that an unintentional loosening of the connection is prevented. For this purpose, interlocking arrangements are made between the Complementary connectors are available, but must be unlocked for the intended solution of the connector by actuating an actuator. Therefore, a preferred embodiment of a connector according to the invention provides that a recess extends radially outward from the plug-in opening in the flange plate, through which, in the assembled state, an actuating element for a locking mechanism protrudes from the housing outwards to the front of the flange plate. In order to also optimally seal this extension of the insertion opening, a dome rising radially adjacent to the insertion opening over the surface of the seal extends through the recess outwards onto the front of the flange plate. The actuating element is covered by the dome.

To solve the problem set out above, a seal for an electrical connector, in particular a built-in connector, specifically a plug connector according to one of the preceding paragraphs has been designed in order to optimally seal it against a device wall, control panel or the like. This seal has a zentra len cutout at the point of the insertion opening of the connector and recesses at the points of mounting holes for the connector.

It is particularly characterized according to the invention in that a sealing lip encircling the central cutout delimits the inner circumference of the central cutout, and on a rear side of the seal there is a bent back edge which rises above the rear surface of the log and on which a circumferential sealing structure is arranged is. Thus, this seal is suitable both to seal the insertion opening when the complementary connector is inserted, and to seal the built-in connector at the same time against the device housing, the wall of the control panel or the like.

In this case, the sealing structure preferably comprises a circumferential sealing strip, which enables reliable linear sealing. The outside of the circumferential edge of the seal is preferably beveled towards the outside in order to convert only part of the fastening force acting perpendicularly on the seal into contact pressure and thus to limit this. As an alternative embodiment, a seal is provided in which the sealing structure is a circumferential sealing edge that protrudes radially outward. In this way, an undesired shearing action on the outer edge of the seal can be avoided and the sealing edge can be pressed vertically against the device wall, control panel or the like.

A particularly preferred embodiment for a seal for a built-in connector in particular is characterized in that at positions for the implementation of fastening means are arranged sealing means rising above the front surface of the seal with central passages for the fastening means. This means that the built-in connector can also be mounted in an optimally sealed manner at the points of the fastening means.

A further advantageous embodiment of a seal according to the invention is characterized in that at positions for the passage of retaining pins, domes with central passages for the spacer pins are arranged above the surface of the seal rising above the surface of the seal. Such a seal is optimally suited for use in built-in connector, the flange plate and housing of which can be connected to one another at least temporarily by means of interacting retaining pins and retaining bores on these components.

For built-in connectors with locking arrangements and actuating elements for their unlocking, a seal is optimally suited, which according to the invention has a ra dial following the insertion opening over the front surface of the seal has the dome. The actuating element of the locking arrangement can be accommodated under this dome. This dome is preferably made in one piece with the seal.

The good centering of the seal with respect to, preferably, the flange plate is ensured by a strip which surrounds the sealing lip for the insertion opening radially on the outside and rises above the front upper surface of the seal. This bar also represents an additional sealing edge and also improves the sealing effect. In order to keep the built-in connector sealed even when the complementary connector is not inserted, at least one radially protruding connecting strip is preferably formed on the seal, at the outer end of which a sealing plug is attached, the outer diameter of which is slightly larger than the inner diameter of the sealing lip of the insertion opening . In order to save material, this sealing plug is preferably made in the shape of a pot.

A full-surface grip tab preferably protrudes from the side of the sealing plug opposite the connecting strip, which significantly simplifies handling. This grip tab is also preferably designed in the shape of a pot and covers and, when the sealing plug is inserted, protects the dome, which covers and seals the actuating element of the locking arrangement.

For a better understanding of the invention, it is explained in more detail with reference to the following figures.

They each show in a greatly simplified, schematic representation:

1 shows a view of a first embodiment of a built-in connector according to the invention from obliquely from above;

Fig. 2 is a view rotated 180 degrees;

3 shows an exploded view obliquely from above;

4 shows a cross section exactly in the center plane of the built-in connector of FIGS. 1 to 3;

5 shows a cross section in a parallel plane which contains the central axes of the fastening bores and the retaining pins;

6 shows a detailed cross section in the area of the fastening bores with the fastening screw inserted;

7 shows a detailed cross section in the area of the fastening bores with the fastening screw inserted and tightened;

8 shows an advantageous embodiment of a seal for a built-in connector on a larger scale; 9 shows a view of a further embodiment of a built-in plug connector according to the invention, obliquely from the top;

FIG. 10 shows a cross section exactly in the center plane of the built-in connector of FIG. 7; and

11 shows a cross section through a further embodiment of a built-in connector with a stepped beveled sealing edge.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, whereby the disclosures contained in the entire description can be applied accordingly to the same parts with the same reference numerals or the same component names. The position details chosen in the description, e.g. above, below, side, etc., refer to the figure immediately described and shown and these position details are to be transferred accordingly to the new position if there is a change in position.

In FIG. 1, a first embodiment of a built-in plug connector according to the invention in the form of a chassis socket for a data plug, in particular an RJ45 data plug, is shown in a perspective view. Of course, the structure according to the invention can also be transferred to other types of built-in connector, which is explained by way of example using the further exemplary embodiment in FIGS. 9 and 10, which show an XLR chassis socket.

In the following description, the same reference numerals or component designations are used for the same parts. In order to avoid unnecessary repetition, reference is made to the detailed description that has already been made.

The exemplary embodiments show possible design variants, whereby it should be noted at this point that the invention is not limited to the specifically illustrated design variants, but rather various combinations of the individual design variants are possible with one another and this possible variation is based on the teaching on technical action by the present invention is within the ability of a person skilled in the art working in this technical field. The electrical built-in connector of FIG. 1, shown in detail in an exploded view in FIG. 3, comprises a housing 1 with an insertion opening 2 for a complementary connector (not shown). At the plug-in end, on the front of the Ge housing 1, a cantilevered connecting flange 3 is provided, which protrudes preferablyrechtwin angularly from the housing 1 and preferably over its entire circumference. The connec tion flange 3 also has through openings or partially open recesses 4 through which fastening means 5, typically fastening screws, rivets or the like, for the built-in connector can be passed in order to fix it in a device wall G, a control panel or similar elements (see Fig. 6). The recesses 4 are preferably positioned in two corners of the connecting flange 3, which are rectangular here, opposite one another with respect to the central axis of the insertion opening 2. Of course, other outline shapes of the connecting flange 3 are also possible, for example a circular outline, a polygon, or the like. Through-openings 4 can also be present in all corners of the connecting flange 3.

At other points of the connecting flange 3 there are holding bores 6 which are delimited by rings 7 rising above the front side of the connecting flange 3. Typically, two retaining bores 6 are positioned in two corners of the connecting flange 3 that are opposite to one another with respect to the central axis of the plug-in opening 2. Complementary holding elements of other components can be used in these holding bores 6. These holding bores 6 are preferably provided in the center of rings 7 rising above the connecting flange 3.

Finally, a locking arrangement 8, 9 is also positioned in or on the housing 1, the at least one locking element 9 of which can also be unlocked by means of an actuating element 8. This actuator 8 protrudes beyond the plug-in end of the Ge housing 1 to the front so that it can be easily reached by the user.

The front of the connecting flange 3 of the housing 1 is in the assembled state of the built-in connector, a plug-in flange plate 10 opposite. This has an insertion opening 11 for the complementary plug connector in a coaxial arrangement with respect to the insertion opening 2 of the housing 1. Furthermore, assembly holes 12 are worked out in the flange plate 10, positioned coaxially to the recesses 4 in the connecting flange 3 and for the implementation of the fastening means 5 for the built-in connector for connection to a device wall, a control panel or the like. At the point at which the actuating element 8 is arranged, a radially outwardly facing recess 13 extends from the insertion opening 11, through which the actuating element 8 can protrude to the front of the flange plate 10.

The outer edge 14 of the flange plate 10 is bent up in the direction of the housing 1 and over covers - this is better in the rear view of the built-in connector in Fig. 2 and in the cross section of FIG. 4 recognizable - the outer edge of the connecting flange 3 Flange plate 10, the mounting bores 12 preferably have socket-shaped extensions 15 in the direction of the connecting flange 3 and preferably extend up to the point of contact with this connecting flange 3.

At positions which correspond to the holding bores 6 of the connecting flange 3, the flange plate 10 has holding pegs 16 protruding in the direction of the housing 1. Their ends are laid out for insertion and fixing in the holding bores 6 of the connecting flange 3. At most, they can also be inserted completely into the holding bores 6 up to the contact with the housing wall, control panel or the like and act as spacers.

Inserted directly between the flange plate 10 and the connecting flange 3 of the housing 1 and held clamped between these components is a preferably plate-shaped seal 17 for sealing against the device wall G, the control panel or the like. This seal 17 has a central recess 30 which corresponds in size to at least the insertion opening 2 and which is arranged coaxially to this. The central cutout 30 is preferably delimited by a circumferential sealing lip 18 which protrudes radially into the insertion opening 2 and seals the annular gap of the insertion opening 2 when the complementary connector is inserted.

The edge 19 of the seal 17 is bent up in the region of the flange plate 10 and the connecting flange 3 in the direction of the housing 1 and overlaps with this bent-up edge strip 19 over the outer peripheral edge of the connecting flange 3.On the other hand, the bent-up edge 19 of the seal 17 itself again from the upturned outer edge 14 of the flange plate 10 covered. The relative thicknesses of the seal 17 and the connecting flange and the height of the outer edge 14 are selected such that, in the assembled state, the circumferential edge 14 of the flange plate 10 protrudes up to the height of the rear of the connecting flange 3 of the housing 1 and that in the direction of the housing 1 protruding edge 19 of the seal 17 over the entire circumference of the connecting flange 3 protrudes beyond its rear surface and is finally pressed against the wall of the device housing, the control panel or the like during the assembly of the built-in connector and fulfills the sealing function. At the location of the mounting bores 12 of the flange plate or the recesses 4 of the connecting flange 3, passage openings 20 are also made in the seal 17.

As can be seen clearly in FIGS. 6 and 7, in a preferred embodiment of the invention, the inside of the bent-up edge 14 of the flange plate 10 is designed to be beveled towards the outside. The seal 17, or rather its bent-up edge 19, is also bevelled towards the outside, preferably complementary to the chamfering of the flange plate 10. As shown in FIG. 7, the edge is tightened when the fastening screw 5 is tightened during the assembly of the chassis connector 19 of the seal 17 is pressed against the device wall G, the control panel or the like, but the seal is preferably completely covered and protected by the flange plate 10. Alternatively, a construction according to FIG. 11 could be selected, in which in the assembled state the circumferential edge 14 of the flange plate 10 ends in front of the level of the rear of the connecting flange 3 of the housing 1 and a circumferential, outwardly protruding sealing edge 31 at least part of the thickness of the edge 14 of the flange plate 10 that is raised in the direction of the housing 1.

As is also clearly shown in FIGS. 6 to 8, according to a preferred embodiment, the seal 17 has sealing grommets 21 formed on the seal 17 at the locations of the mounting bores 12, which protrude towards the rear of the flange plate 10. These seals 21 extend in the assembled state within the assembly bores 12 of the flange plate 10, in particular also within its socket-shaped extension 15, the outer diameter of which preferably corresponds to the inner diameter of the assembly bore 12 or the extension 15. The inside diameter is determined here in the section in which the shank of the fastening means, so preferably the threaded section of a fastening screw 5, is received in the mounting hole 12.

In the unloaded state, the sealing grommets end - as shown in Fig. 6 - slightly above the lower edge of the receiving area for the head of the fastening screw 5 in the mounting hole 12. After tightening the fastening screw 5, the material of the sealing grommets 21 between the fastening screw 5 , which is tightened to the stop on the inside of the mounting hole 12 of the flange plate 10, and the flange plate 10 is squeezed and thereby seals the area of the screw head.

The inside diameter of the seal 21 should preferably be larger than the outside diameter of the fastening means, in particular the fastening screws 5, this outside diameter being the nominal diameter of the thread. As a minimum, the inner diameter of the through opening 20 of the seal should fill 21 as shown in FIG. 6 in the unloaded state to correspond to the outer diameter of the fastening screws 5. When the fastening screw 5 is completely tightened, however, the sealing sleeve 5 is compressed and the material of the sealing sleeve 21 rests against the inner wall of the mounting hole 12 and penetrates between the threads of the fastening screw 5, resulting in the state shown in FIG. 7. Together with the form fit in the area of the screw head, this results in an optimal sealing effect over the entire height of the sealing grommet 21.

At the positions of the retaining bores 6 on the connecting flange 3, the seal 17 preferably has domes 22 rising above its surface, which in the assembled state of the built-in connector cover the rings 7 in an adjacent manner. To guide the retaining pegs 16 of the flange plate 10 through, these domes 22 have central openings 23, the diameter of which is advantageously somewhat smaller than the diameter of the retaining bore 6 and / or the section of the retaining peg 16 to be inserted into the retaining bore 6.

A further structure rising above the surface of the seal 17 is a strip 24 or protuberance surrounding the sealing lip 18 for the insertion opening 2 and the central recess 30 radially on the outside. This bar 24 is in the assembled state received by seal 17 and flange plate 10 in a corresponding groove 25 which surrounds the insertion opening 11 coaxially.

In the area in which the actuating element 8 protrudes through the flange plate 10 in the assembled state, the bar 24 merges into a dome 26 which also rises above the surface of the seal 17 and its height even further above the height of the bar 24. This dome 26, which is advantageously made in one piece with the seal 17, also protrudes beyond the front of the flange plate 10 and allows the user to actuate the operating element 8 and thus to release the locking of the complementary connector plugged into the built-in connector, which until then has been released by the locking element 9 is held in the insertion opening 2 of the housing 1.

In addition to the sealing of the insertion opening 2 when the complementary connector plugged in through the sealing lip 18 of the seal 17, there was also a desire for the possibility of a seal in the unmated state. For this purpose, at least one radially protruding connection strip is formed on the seal 17, un ter the edge region 14 of the flange plate 10 bent over towards the housing 1. Preferably - as shown in the figures - two such connecting strips 27 are formed on the seal 17 in an approximately parallel or slightly V-shaped arrangement. A sealing plug 28 is attached to the outer end of this connecting strip 27, the outer diameter of which corresponds at most to the inner diameter of the insertion openings 2, 11 and which is preferably slightly larger than the inner diameter of the sealing lip 18 of the seal 17 that seals the insertion opening 2 designed.

For easier handling of the sealing plug 28, a full-surface gripping tab 29 protrudes from the side of the sealing plug 28 opposite the connecting strip 27. This grip tab 29 is also preferably designed in the shape of an open cup, its opening being oriented in the same direction as the dome 26 sealing the actuating element 8 and lying in line with this dome 26 and the central axis of the insertion opening 2. When the connecting strips 27 are folded over to insert the sealing plug 28 into the insertion opening 2, the dome 26 is also simultaneously covered and protected by the cup-shaped grip tab 29. 11 shows a cross section through a further embodiment of a built-in connector with a stepped beveled sealing edge.

The scope of protection is determined by the claims. However, the description and the drawings are to be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions for themselves. The task on which the independent inventive solutions are based can be found in the description.

For the sake of clarity, it should finally be pointed out that, for a better understanding of the structure, some elements have been shown not to scale and / or enlarged and / or reduced.

List of reference symbols housing 36 insertion opening 37 connecting flange 38 recess 39 fastening screw 40 retaining bore ring 41 actuating element 42 locking element 43 flange plate 44

45 Insertion opening for mounting hole 46 Recess 47 Curved edge 48 Socket-shaped extension 49

50 Retaining pin seal 51 Sealing lip 52 Curved edge 53 Through opening 54

55 Dome sealing grommet 56 Central opening 57 Strip 58 Groove 59

60 Dome connecting strips 61 Sealing plug 62 Gripping tab 63 Central cut-out 64

65 sealing edge

G device wall

Claims

Patent claims

1. An electrical connector, in particular a built-in connector, comprising a housing (1) with an insertion opening (2) for a complementary connector, where at the insertion end of the housing (1) a cantilevered connecting flange (3) projects from the recesses (4) to Implementation of fastening means (5) has an insertion-side flange plate (10) with an insertion opening (11) for the complementary connector and with mounting holes (12) for connection to a device wall (G), a control panel od the connecting flange (3) and the flange plate (10) inserted seal (17) with a central cutout (30) in the area of the insertion opening (2), and at least one fastening means (5) for fixing the housing (1), flange plate (10) and seal (17) on the device wall (G), control panel od. The like., characterized in that the outer edge (14) of the flange plate (10) is bent up in the direction of the housing (1) and the off senrand of the connecting flange (3) covered, and the seal (17) with a circumferential sealing lip (18) protrudes radially into the insertion opening (2) and has an edge (19) bent up in the direction of the housing (1), the outer peripheral edge of the connecting flange (3) overlaps and which itself is covered by the outer edge (14) of the flange plate (10), wherein in the assembled state the surrounding edge (14) of the flange plate (10) up to a maximum of the rear of the connecting flange (3) of the housing (1) protrudes and the edge (19) of the seal (17) protruding in the direction of the housing (1) protrudes over the entire circumference of the connecting flange (3) its rear surface.

2. Connector according to claim 1, characterized in that the inside of the outer edge (14) of the flange plate (10) bent up in the direction of the housing (1) is beveled towards the outside, and that the outer side of the circumferential edge (19) of the seal ( 17) is also beveled towards the outside, preferably complementary thereto.

3. Connector according to claim 1, characterized in that in the assembled state the circumferential edge (14) of the flange plate (10) ends in front of the height of the rear side of the connecting flange (3) of the housing (1) and a circumferential, outwardly The protruding sealing edge (31) covers at least part of the thickness of the edge (14) of the flange plate (10) which is bent up in the direction of the hous ses (1).

4. Connector according to claim 1, characterized in that at the points of the mounting bores (12) on the seal (17) seal (21) are molded, which protrude in the direction of the flange plate (10), wherein the assembled state Sealing grommets (21) run within the mounting bores (12) of the flange plate (10), their outer diameter preferably corresponding to the inner diameter of the mounting hole (12), and the sealing grommets (21) above the lower edge of the receiving area for the head of the fastener (5) end in the mounting hole (12).

5. Connector according to claim 4, characterized in that the inner diameter of the seal fill (21) minimally corresponds to the outer diameter of the fastening means (5).

6. Connector according to one of claims 1 to 5, characterized in that the flange plate (10) in the direction of the housing (1) has protruding retaining pins (16) that the connecting flange (3) has corresponding retaining bores (6) into which the Ends of the retaining pegs (16) can be inserted, the retaining bores (6) running in the center of rings (7) rising above the connecting flange (3) and the seal (17) these rings (7) with centrally open domes ( 22) covered.

7. Connector according to claim 6, characterized in that the central opening (23) of the dome (22) has a slightly smaller diameter than the holding hole (6) and / or the outer diameter of the holding pin (16).

8. Connector according to one of claims 1 to 7, characterized in that the flange plate (10) has a circumferential groove (25) surrounding the insertion opening (11), in which groove (25) a sealing lip (18) for the Insertion opening (2) surrounding the radially outside and rising above the surface of the seal (17) bar (24) is received.

9. Connector according to one of claims 1 to 8, characterized in that in the flange plate (10) of the insertion opening (11) a recess (13) extends radially outward through which an actuating element (8) for a Locking mechanism (8, 9) from the housing (1) outwards to the front side of the flange plate (3) protrudes, whereby a dome (26) which rises radially adjoining the insertion opening (11) above the surface of the seal (17) through the recess (13) outwards onto the front side of the flange plate (10 ) extends while the actuating element (8) is covered by the dome (26).

10. Seal (17) for an electrical connector, in particular a built-in connector, specifically a connector according to one of claims 1 to 9, for sealing against a device wall (G), control panel or the like, with a central cutout (30) at the location of the plug-in opening (2) of the connector and recesses (20) at the locations of mounting bores (12) for the connector, characterized in that a sealing lip (18) surrounding the central cutout (30) encircles the inner circumference of the central cutout limited, and on a rear side of the seal (17) there is a bent back edge (19) which rises above the rear surface of the seal (17) and on which a circumferential sealing structure is arranged or which itself forms the sealing structure.

11. Seal according to claim 10, characterized in that the sealing structure comprises a circumferential sealing strip, the outer side of the circumferential edge (19) of the seal (17) preferably being beveled towards the outside.

12. Seal according to claim 10 or 11, characterized in that the sealing structure is a radially outwardly cantilevered, circumferential sealing edge.

13. Seal according to one of claims 10 to 12, characterized in that at positions for the implementation of fastening means (5) over the front Oberflä surface of the seal (17) fill the rising seal (21) with central passages (20) for the Fastening means (5) are arranged.

14. Seal according to one of claims 10 to 13, characterized in that at positions for the implementation of spacer pins (16) on the front Oberflä surface of the seal (17) rising domes (22) with central passages (23) for the Ab Stand holder pins (16) are arranged.

15. Seal according to one of claims 10 to 14, characterized in that a radially adjoining the central cutout (30) over the front surface of the Seal (17) uplifting dome (26) is arranged and is preferably made in one piece with the device (17).

16. Seal according to one of claims 10 to 15, characterized in that a strip (24) is provided which surrounds the central cutout (30) radially on the outside and rises above the front surface of the seal (17).

17. Seal according to one of claims 10 to 16, characterized in that at least one radially protruding connecting strip (27) is formed on the seal (17), at the outer end of which a preferably cup-shaped sealing plug (28) is attached, the outer diameter of which is slightly larger is than the inner diameter of the sealing lip (18) of the central cutout (30).

18. A seal according to claim 17, characterized in that on the connec tion strip (27) opposite side of the sealing plug (28) protrudes a full-area Griffla cal (29), which is preferably pot-shaped.